Heat Pumps/Air Conditioning, Indoor Air Quality, Airflow (ductwork) , and 2 more
"I work in the trades, so im no easy critic. My elderly motherâ s furnace went out, and was in need of repairs. Chris and his company were my choice, and let me tell you, was I impressed. Showed up same day within a few hours, diagnosed the issue, He presented multiple options to my mother, kept me updated along the way, and got the repair done SAME DAY!!! My mother was impressed with how clean he was, how much he cleaned after, and even scheduled a follow up for 6 months later to ensure the system is functioning as intended. Will definitely be using Chris for all my HVAC needs and referring him to everyone and anyone that asks!"
Jayson J. in March 2024

HVAC Repair, HVAC Installation
"This company never failed to impress me. I was truly blown away by the service I received from them as they addressed my HVAC air conditioning repair needs yesterday. The technician was intelligent, diligent, and expert about the service. I will highly recommend this company to everyone."
Jack L. in April 2022
Concrete, Painting, Roofing , and 1 more
"The tankless water heater installation at our Oakland home has been fantastic so far. We finally have enough hot water for the whole family without constantly waiting between showers. Dan completed the installation quickly and explained how everything worked before leaving."
4C8E0CA27B8652B20E639F327DA10108B3BCEF40269BF94D485F7F4DFA1B3937 D. in May 2026

Furnace or Heat Pump Installation, repair, or emergency service, Service, sales, installation of water heaters and water filtration, General service, ac repair, and new installations or replacements , and 2 more
"Awesome company!!! From the first call I placed, everyone was friendly and professional.. Fernando fixed the problem in minutes and explained the problem. He was super professional, had a great personality and was the most honest repair person I have literally ever met!! Thank you again soo much Fernando & Right Time Home Services!!! I truly appreciate you..:)"
1F827ABC59C0718839BD5F947FE6176F67DEFFF8CE2D54979BAB45EDEB56D521 A. in August 2024
HVAC Installs, HVAC Repairs
"Hassan was very prompt, professional and personable. He found the problem and offered me choices on how to fix it. He made sure the system was working properly and in good condition before he left. I also enjoyed talking to him about his experiances abroad."
Daniel M. in May 2009
HVAC
"I called Climate specialists for my heater that stopped working. Its been freezing lately so I needed to call someone ASAP. I called Climate Specialists and technician Dan came the very next day. He answered any questions i had and the pricing was fair. Will definitely be saving his number and keep him as my go to HVAC technician."
Leo S. in February 2024

"This HVAC company is honest and professional, definitely the one to hire. I had another company replace my A/C units last summer and level the furnace, but the system broke down after 6 months. There were several parts of the system that they failed to repair or even inform me about. Reese spent the time to give me a fair and accurate estimate, and even encouraged me to get other estimates before hiring them! Lance the installer came out to replace my old furnace and repair a few parts of the A/C system that had been slapped together, but he went above and beyond to expand my attic access, improve the drainage and bring the whole system up to code. The A/C and heating work great now, and my family and I feel safer knowing that Lance put in the extra time to carefully check everything."
Jen P. in April 2022

"Linker HVAC installed the whole air conditioner ,furnace and duct work job for my ADU ,they are nice and knowledgeable,good install quality .HERS rater said the ductwork they designed performs really good airflow , I am very satisfied with their work. Thank you."
84D4C68E3E7BFE139678916FE76A23F8ADD0C5C881DA3E52655EABD0198AE026 5. in January 2025

HVAC, Service Calls, Emergency Calls , and 6 more
"They did a great job repairing the central A/C system."
Linh N. in September 2024
Repair for Furnaces, Repair for Air Conditioning
"Outstanding. Duane is the best HVAC professional I've ever worked with. He thoroughly explained the HVAC process and standard yearly preventative maintenance requirements. He also gave me a quick tutorial about my particular A/C unit and explained how to spot any early signs of malfunction in order to prevent future expensive repairs. Top notch, highly recommended."
FirstJohn H. in July 2014
In business since 1991
Plumbing, Electrical, HVAC
About us: "Since we opened our doors in 1991, All Pro Plumbing, Heating, Air & Electrical has been dedicated to providing residential and commercial customers in Ontario, CA with top-notch plumbing, heating, air conditioning, indoor air quality, and electrical services. Nearly 30 years later, we have grown significantly, but our values have not changed. We are just as committed to customer service and providing you with personalized options to meet your specific needs. We know that when you are dealing with an urgent plumbing, HVAC, or electrical issue, there isnt always time to wait around for hours for your technician to show up. Today, with more technicians, we are able to answer your call 24 hours a day, 7 days a week, and respond to your needs faster, almost always within the hour! When you call us for service, well work with you to make sure your problem gets solved according to your specific needs and budget."
In business since 2019
Additions and Remodels
About us: "RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!"

HVAC Installations & Repiars, Insulation and Air Ducts, Rodent Proofing
"This HVAC company is honest and professional, definitely the one to hire. I had another company replace my A/C units last summer and level the furnace, but the system broke down after 6 months. There were several parts of the system that they failed to repair or even inform me about. Reese spent the time to give me a fair and accurate estimate, and even encouraged me to get other estimates before hiring them! Lance the installer came out to replace my old furnace and repair a few parts of the A/C system that had been slapped together, but he went above and beyond to expand my attic access, improve the drainage and bring the whole system up to code. The A/C and heating work great now, and my family and I feel safer knowing that Lance put in the extra time to carefully check everything."
Jen P. in April 2022

In business since 2023
HVAC, Plumbing
About us: "All Plumbing Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business."

HVAC NEEDS, Plumbing, Performance Air Conditioning , and 1 more
"I recently had the pleasure of working with Authority Plumbing, and I cannot recommend them highly enough. From the outset, they came to my home with a plan that demonstrated their deep understanding of plumbing challenges. Clayton, the technician assigned to my project, was exceptional. He took the time to listen to my concerns and opinions, making sure that I felt heard and valued. He explained each step, ensuring I was comfortable with the plan before proceeding. When a sub-contractor was brought on to streamline the process started making several errors, Clayton quickly took charge of the situation. They fixed these mistakes, alongside resolving my initial drainage issues, at no additional expense, was truly remarkable. The team demonstrated a genuine commitment to ensuring the work was completed to the highest standard. Thanks to their efforts, my plumbing issues have been resolved. I would not hesitate to recommend them to anyone in need of professional plumbing services."
AB684F47244A0CD28AF45256BEB426A4F6473444084C8DE5CE96E4E7803186A5 1. in October 2025

HVAC
"They are the best at what they do, they gave us good customer service and a good price."
Elena C. in May 2021
Walnut Heating & Furnace Contractors are rated 4.8 out of 5 based on 1093 reviews of 1093 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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